An aerial view of Shippingport Island and the McAlpine Locks and Dams. The Louisville Portland Canal is on the left side of the photograph, with Shippingport Island in the center, and the locks and dam on the right.

The clubhouse of Sleepy Hollow Country Club sits next a dammed body of water. Below the dam a man in a hat stands at the water's edge. Above the dam a number of flat-bottomed row boats are moored to a wooden walkway which approaches the clubhouse....

Several groups of men appear to be building forms for concrete to use as construction materials for the dam at Shippingport power station. A train carrying supplies is visible on a track near the river. A group of men standing in the mud are...

The interior of the generator shaft room of the Hydroelectric Station at the McAlpine Locks and Dam along the Falls of the Ohio in Louisville, Ky. A row of eight large circular generators along a narrow room.

The interior of the generator shaft room of the Hydroelectric Station at the McAlpine Locks and Dam along the Falls of the Ohio in Louisville, Ky. A row of eight large circular generators along a narrow room. Handwritten on the border of the...

Taken from an elevated position at bear trap on the Ohio River, a group of men stand and look out onto drift flowing on the river. Handwritten on the border of the negative "Ohio River - Drift flowing thru Bear Trap at hydro-electric plant."

A view of the Pennsylvania Railroad Bridge (also known as the Fourteenth St. Bridge) and the Ohio River. Louisville can be seen in the far background. Handwritten on the border of negative is "Ohio River at Louisville A view below U.S. Dam from...

The Louisville Hydro Electric Power Plant. The plant, a white building, can be seen in the distance along the Ohio River. To the left is a dam. Handwritten on the border of the negative is "Ohio River - Louisville - Ohio Falls Hydro-elec. plant / A...

A view of a dam on the Ohio River looking downstream towards the Louisville Hydro Electric Power Plant. The plant, a white building, can be seen in the distance along the Ohio River. Handwritten on border of negative "Ohio River- Louisville- U.S....

A view of a dam on the Ohio River looking downstream towards the Louisville Hydro Electric Power Plant. The plant, a white building, can be seen in the distance along the Ohio River. Handwritten on border of negative "Ohio River- Louisville- U.S....

The Louisville Hydro Electric Power Plant. The plant, a white building, can be seen in the distance along the Ohio River. To the right is a dam. Handwritten on the border of the negative is "Ohio Falls- Hydro Electric Station."

The Louisville Hydro Electric Power Plant as seen from the Pennsylvania Railroad Bridge. The plant, a white building, can be seen in the distance along the Ohio River. To the right is a dam. Handwritten on the border of the negative is "Ohio Falls-...

Aerial view of the Dix Dam along the Dix River in Lancaster, Ky. Dam construction was completed in 1927 to generate hydroelectric power and prevent flooding of Kentucky River, and created Harrington Lake. Handwritten on border of negative is "Dam...

Aerial view of the Dix Dam along the Dix River in Lancaster, Ky. Dam construction was completed in 1927 to generate hydroelectric power and prevent flooding of Kentucky River, and created Harrington Lake. Handwritten on border of negative is "Dam...

Aerial view of the Dix Dam along the Dix River in Lancaster, Ky. Dam construction was completed in 1927 to generate hydroelectric power and prevent flooding of Kentucky River, and created Harrington Lake. Handwritten on border of negative is...

Aerial view of the Dix Dam along the Dix River in Lancaster, Ky. Dam construction was completed in 1927 to generate hydroelectric power and prevent flooding of Kentucky River, and created Harrington Lake. Handwritten on border of negative is...